




public class Test {
String str = new String("good");
char[] ch = {'a','b','c'};

    public static void main(String[] args) {
        Test test = new Test();
        test.change(test.str,test.ch);
        System.out.print(test.str+" and ");
        System.out.println(test.ch);
    }

    public void change(String str,char[] ch){
        str = "test ok";
        ch[0] = 'g';
    }
}
